<template>
    <div :id="id" :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import * as echarts from 'echarts'
import resize from './mixins/resize'
import 'echarts-wordcloud/dist/echarts-wordcloud'
import 'echarts-wordcloud/dist/echarts-wordcloud.min'

export default {
    mixins: [resize],
    props: {
        className: {
            type: String,
            default: 'chart'
        },
        id: {
            type: String,
            default: 'chart'
        },
        width: {
            type: String,
            default: '100%'
        },
        height: {
            type: String,
            default: '400px'
        },
        data: {
            type: Array,
            default: []
        },
        title: {
            type: String,
            default: ''
        }
    },
    data() {
        return {
            chart: null
        }
    },
    mounted() {
        this.initChart()
    },
    beforeDestroy() {
        if (!this.chart) {
            return
        }
        this.chart.dispose()
        this.chart = null
    },
    methods: {
        initChart() {
            this.chart = echarts.init(document.getElementById(this.id))
            const option = {
                title: {
                    text: this.title,
                    x: 'center'
                },
                backgroundColor: '#fff',
                // tooltip: {
                //   pointFormat: "{series.name}: <b>{point.percentage:.1f}%</b>"
                // },
                series: [
                    {
                        type: 'wordCloud',
                        //用来调整词之间的距离
                        gridSize: 10,
                        //用来调整字的大小范围
                        // Text size range which the value in data will be mapped to.
                        // Default to have minimum 12px and maximum 60px size.
                        sizeRange: [14, 60],
                        // Text rotation range and step in degree. Text will be rotated randomly in range [-90,                                                                             90] by rotationStep 45
                        //用来调整词的旋转方向，，[0,0]--代表着没有角度，也就是词为水平方向，需要设置角度参考注释内容
                        // rotationRange: [-45, 0, 45, 90],
                        // rotationRange: [ 0,90],
                        rotationRange: [0, 0],
                        //随机生成字体颜色
                        // maskImage: maskImage,
                        textStyle: {
                            normal: {
                                color: function () {
                                    return (
                                        'rgb(' +
                                        Math.round(Math.random() * 255) +
                                        ', ' +
                                        Math.round(Math.random() * 255) +
                                        ', ' +
                                        Math.round(Math.random() * 255) +
                                        ')'
                                    )
                                }
                            }
                        },
                        //位置相关设置
                        // Folllowing left/top/width/height/right/bottom are used for positioning the word cloud
                        // Default to be put in the center and has 75% x 80% size.
                        left: 'center',
                        top: 'center',
                        right: null,
                        bottom: null,
                        width: '200%',
                        height: '200%',
                        //数据
                        data: this.data
                    }
                ]
            }
            this.chart.setOption(option)
        }
    }
}
</script>
<style lang="scss" scoped>
.chartsClass {
    padding-left: 1.2rem;
}
</style>
